1 /* General utility routines for GDB, the GNU debugger.
3 Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
4 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
5 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #include "gdb_assert.h"
25 #include "gdb_string.h"
26 #include "event-top.h"
27 #include "exceptions.h"
30 #include "tui/tui.h" /* For tui_get_command_dimension. */
37 /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */
48 #include "expression.h"
52 #include "filenames.h"
54 #include "gdb_obstack.h"
58 #include "inferior.h" /* for signed_pointer_to_address */
60 #include <sys/param.h> /* For MAXPATHLEN */
62 #include "gdb_curses.h"
64 #include "readline/readline.h"
70 extern PTR
malloc (); /* OK: PTR */
72 #if !HAVE_DECL_REALLOC
73 extern PTR
realloc (); /* OK: PTR */
79 /* readline defines this. */
82 void (*deprecated_error_begin_hook
) (void);
84 /* Prototypes for local functions */
86 static void vfprintf_maybe_filtered (struct ui_file
*, const char *,
87 va_list, int) ATTR_FORMAT (printf
, 2, 0);
89 static void fputs_maybe_filtered (const char *, struct ui_file
*, int);
91 static void do_my_cleanups (struct cleanup
**, struct cleanup
*);
93 static void prompt_for_continue (void);
95 static void set_screen_size (void);
96 static void set_width (void);
98 /* A flag indicating whether to timestamp debugging messages. */
100 static int debug_timestamp
= 0;
102 /* Chain of cleanup actions established with make_cleanup,
103 to be executed if an error happens. */
105 static struct cleanup
*cleanup_chain
; /* cleaned up after a failed command */
106 static struct cleanup
*final_cleanup_chain
; /* cleaned up when gdb exits */
108 /* Pointer to what is left to do for an execution command after the
109 target stops. Used only in asynchronous mode, by targets that
110 support async execution. The finish and until commands use it. So
111 does the target extended-remote command. */
112 struct continuation
*cmd_continuation
;
113 struct continuation
*intermediate_continuation
;
115 /* Nonzero if we have job control. */
119 /* Nonzero means a quit has been requested. */
123 /* Nonzero means quit immediately if Control-C is typed now, rather
124 than waiting until QUIT is executed. Be careful in setting this;
125 code which executes with immediate_quit set has to be very careful
126 about being able to deal with being interrupted at any time. It is
127 almost always better to use QUIT; the only exception I can think of
128 is being able to quit out of a system call (using EINTR loses if
129 the SIGINT happens between the previous QUIT and the system call).
130 To immediately quit in the case in which a SIGINT happens between
131 the previous QUIT and setting immediate_quit (desirable anytime we
132 expect to block), call QUIT after setting immediate_quit. */
136 /* Nonzero means that encoded C++/ObjC names should be printed out in their
137 C++/ObjC form rather than raw. */
141 show_demangle (struct ui_file
*file
, int from_tty
,
142 struct cmd_list_element
*c
, const char *value
)
144 fprintf_filtered (file
, _("\
145 Demangling of encoded C++/ObjC names when displaying symbols is %s.\n"),
149 /* Nonzero means that encoded C++/ObjC names should be printed out in their
150 C++/ObjC form even in assembler language displays. If this is set, but
151 DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
153 int asm_demangle
= 0;
155 show_asm_demangle (struct ui_file
*file
, int from_tty
,
156 struct cmd_list_element
*c
, const char *value
)
158 fprintf_filtered (file
, _("\
159 Demangling of C++/ObjC names in disassembly listings is %s.\n"),
163 /* Nonzero means that strings with character values >0x7F should be printed
164 as octal escapes. Zero means just print the value (e.g. it's an
165 international character, and the terminal or window can cope.) */
167 int sevenbit_strings
= 0;
169 show_sevenbit_strings (struct ui_file
*file
, int from_tty
,
170 struct cmd_list_element
*c
, const char *value
)
172 fprintf_filtered (file
, _("\
173 Printing of 8-bit characters in strings as \\nnn is %s.\n"),
177 /* String to be printed before error messages, if any. */
179 char *error_pre_print
;
181 /* String to be printed before quit messages, if any. */
183 char *quit_pre_print
;
185 /* String to be printed before warning messages, if any. */
187 char *warning_pre_print
= "\nwarning: ";
189 int pagination_enabled
= 1;
191 show_pagination_enabled (struct ui_file
*file
, int from_tty
,
192 struct cmd_list_element
*c
, const char *value
)
194 fprintf_filtered (file
, _("State of pagination is %s.\n"), value
);
199 /* Add a new cleanup to the cleanup_chain,
200 and return the previous chain pointer
201 to be passed later to do_cleanups or discard_cleanups.
202 Args are FUNCTION to clean up with, and ARG to pass to it. */
205 make_cleanup (make_cleanup_ftype
*function
, void *arg
)
207 return make_my_cleanup (&cleanup_chain
, function
, arg
);
211 make_cleanup_dtor (make_cleanup_ftype
*function
, void *arg
,
212 void (*dtor
) (void *))
214 return make_my_cleanup2 (&cleanup_chain
,
215 function
, arg
, dtor
);
219 make_final_cleanup (make_cleanup_ftype
*function
, void *arg
)
221 return make_my_cleanup (&final_cleanup_chain
, function
, arg
);
225 do_freeargv (void *arg
)
227 freeargv ((char **) arg
);
231 make_cleanup_freeargv (char **arg
)
233 return make_my_cleanup (&cleanup_chain
, do_freeargv
, arg
);
237 do_bfd_close_cleanup (void *arg
)
243 make_cleanup_bfd_close (bfd
*abfd
)
245 return make_cleanup (do_bfd_close_cleanup
, abfd
);
249 do_close_cleanup (void *arg
)
257 make_cleanup_close (int fd
)
259 int *saved_fd
= xmalloc (sizeof (fd
));
261 return make_cleanup (do_close_cleanup
, saved_fd
);
265 do_ui_file_delete (void *arg
)
267 ui_file_delete (arg
);
271 make_cleanup_ui_file_delete (struct ui_file
*arg
)
273 return make_my_cleanup (&cleanup_chain
, do_ui_file_delete
, arg
);
277 do_free_section_addr_info (void *arg
)
279 free_section_addr_info (arg
);
283 make_cleanup_free_section_addr_info (struct section_addr_info
*addrs
)
285 return make_my_cleanup (&cleanup_chain
, do_free_section_addr_info
, addrs
);
288 struct restore_integer_closure
295 restore_integer (void *p
)
297 struct restore_integer_closure
*closure
= p
;
298 *(closure
->variable
) = closure
->value
;
301 /* Remember the current value of *VARIABLE and make it restored when the cleanup
304 make_cleanup_restore_integer (int *variable
)
306 struct restore_integer_closure
*c
=
307 xmalloc (sizeof (struct restore_integer_closure
));
308 c
->variable
= variable
;
309 c
->value
= *variable
;
311 return make_my_cleanup2 (&cleanup_chain
, restore_integer
, (void *)c
,
316 make_my_cleanup2 (struct cleanup
**pmy_chain
, make_cleanup_ftype
*function
,
317 void *arg
, void (*free_arg
) (void *))
320 = (struct cleanup
*) xmalloc (sizeof (struct cleanup
));
321 struct cleanup
*old_chain
= *pmy_chain
;
323 new->next
= *pmy_chain
;
324 new->function
= function
;
325 new->free_arg
= free_arg
;
333 make_my_cleanup (struct cleanup
**pmy_chain
, make_cleanup_ftype
*function
,
336 return make_my_cleanup2 (pmy_chain
, function
, arg
, NULL
);
339 /* Discard cleanups and do the actions they describe
340 until we get back to the point OLD_CHAIN in the cleanup_chain. */
343 do_cleanups (struct cleanup
*old_chain
)
345 do_my_cleanups (&cleanup_chain
, old_chain
);
349 do_final_cleanups (struct cleanup
*old_chain
)
351 do_my_cleanups (&final_cleanup_chain
, old_chain
);
355 do_my_cleanups (struct cleanup
**pmy_chain
,
356 struct cleanup
*old_chain
)
359 while ((ptr
= *pmy_chain
) != old_chain
)
361 *pmy_chain
= ptr
->next
; /* Do this first incase recursion */
362 (*ptr
->function
) (ptr
->arg
);
364 (*ptr
->free_arg
) (ptr
->arg
);
369 /* Discard cleanups, not doing the actions they describe,
370 until we get back to the point OLD_CHAIN in the cleanup_chain. */
373 discard_cleanups (struct cleanup
*old_chain
)
375 discard_my_cleanups (&cleanup_chain
, old_chain
);
379 discard_final_cleanups (struct cleanup
*old_chain
)
381 discard_my_cleanups (&final_cleanup_chain
, old_chain
);
385 discard_my_cleanups (struct cleanup
**pmy_chain
,
386 struct cleanup
*old_chain
)
389 while ((ptr
= *pmy_chain
) != old_chain
)
391 *pmy_chain
= ptr
->next
;
393 (*ptr
->free_arg
) (ptr
->arg
);
398 /* Set the cleanup_chain to 0, and return the old cleanup chain. */
402 return save_my_cleanups (&cleanup_chain
);
406 save_final_cleanups (void)
408 return save_my_cleanups (&final_cleanup_chain
);
412 save_my_cleanups (struct cleanup
**pmy_chain
)
414 struct cleanup
*old_chain
= *pmy_chain
;
420 /* Restore the cleanup chain from a previously saved chain. */
422 restore_cleanups (struct cleanup
*chain
)
424 restore_my_cleanups (&cleanup_chain
, chain
);
428 restore_final_cleanups (struct cleanup
*chain
)
430 restore_my_cleanups (&final_cleanup_chain
, chain
);
434 restore_my_cleanups (struct cleanup
**pmy_chain
, struct cleanup
*chain
)
439 /* This function is useful for cleanups.
443 old_chain = make_cleanup (free_current_contents, &foo);
445 to arrange to free the object thus allocated. */
448 free_current_contents (void *ptr
)
450 void **location
= ptr
;
451 if (location
== NULL
)
452 internal_error (__FILE__
, __LINE__
,
453 _("free_current_contents: NULL pointer"));
454 if (*location
!= NULL
)
461 /* Provide a known function that does nothing, to use as a base for
462 for a possibly long chain of cleanups. This is useful where we
463 use the cleanup chain for handling normal cleanups as well as dealing
464 with cleanups that need to be done as a result of a call to error().
465 In such cases, we may not be certain where the first cleanup is, unless
466 we have a do-nothing one to always use as the base. */
469 null_cleanup (void *arg
)
473 /* Add a continuation to the continuation list, the global list
474 cmd_continuation. The new continuation will be added at the front.*/
476 add_continuation (void (*continuation_hook
) (struct continuation_arg
*, int),
477 struct continuation_arg
*arg_list
)
479 struct continuation
*continuation_ptr
;
482 (struct continuation
*) xmalloc (sizeof (struct continuation
));
483 continuation_ptr
->continuation_hook
= continuation_hook
;
484 continuation_ptr
->arg_list
= arg_list
;
485 continuation_ptr
->next
= cmd_continuation
;
486 cmd_continuation
= continuation_ptr
;
489 /* Walk down the cmd_continuation list, and execute all the
490 continuations. There is a problem though. In some cases new
491 continuations may be added while we are in the middle of this
492 loop. If this happens they will be added in the front, and done
493 before we have a chance of exhausting those that were already
494 there. We need to then save the beginning of the list in a pointer
495 and do the continuations from there on, instead of using the
496 global beginning of list as our iteration pointer. */
498 do_all_continuations (int error
)
500 struct continuation
*continuation_ptr
;
501 struct continuation
*saved_continuation
;
503 /* Copy the list header into another pointer, and set the global
504 list header to null, so that the global list can change as a side
505 effect of invoking the continuations and the processing of
506 the preexisting continuations will not be affected. */
507 continuation_ptr
= cmd_continuation
;
508 cmd_continuation
= NULL
;
510 /* Work now on the list we have set aside. */
511 while (continuation_ptr
)
513 (continuation_ptr
->continuation_hook
) (continuation_ptr
->arg_list
, error
);
514 saved_continuation
= continuation_ptr
;
515 continuation_ptr
= continuation_ptr
->next
;
516 xfree (saved_continuation
);
520 /* Walk down the cmd_continuation list, and get rid of all the
523 discard_all_continuations (void)
525 struct continuation
*continuation_ptr
;
527 while (cmd_continuation
)
529 continuation_ptr
= cmd_continuation
;
530 cmd_continuation
= continuation_ptr
->next
;
531 xfree (continuation_ptr
);
535 /* Add a continuation to the continuation list, the global list
536 intermediate_continuation. The new continuation will be added at
539 add_intermediate_continuation (void (*continuation_hook
)
540 (struct continuation_arg
*, int),
541 struct continuation_arg
*arg_list
)
543 struct continuation
*continuation_ptr
;
546 (struct continuation
*) xmalloc (sizeof (struct continuation
));
547 continuation_ptr
->continuation_hook
= continuation_hook
;
548 continuation_ptr
->arg_list
= arg_list
;
549 continuation_ptr
->next
= intermediate_continuation
;
550 intermediate_continuation
= continuation_ptr
;
553 /* Walk down the cmd_continuation list, and execute all the
554 continuations. There is a problem though. In some cases new
555 continuations may be added while we are in the middle of this
556 loop. If this happens they will be added in the front, and done
557 before we have a chance of exhausting those that were already
558 there. We need to then save the beginning of the list in a pointer
559 and do the continuations from there on, instead of using the
560 global beginning of list as our iteration pointer.*/
562 do_all_intermediate_continuations (int error
)
564 struct continuation
*continuation_ptr
;
565 struct continuation
*saved_continuation
;
567 /* Copy the list header into another pointer, and set the global
568 list header to null, so that the global list can change as a side
569 effect of invoking the continuations and the processing of
570 the preexisting continuations will not be affected. */
571 continuation_ptr
= intermediate_continuation
;
572 intermediate_continuation
= NULL
;
574 /* Work now on the list we have set aside. */
575 while (continuation_ptr
)
577 (continuation_ptr
->continuation_hook
) (continuation_ptr
->arg_list
, error
);
578 saved_continuation
= continuation_ptr
;
579 continuation_ptr
= continuation_ptr
->next
;
580 xfree (saved_continuation
);
584 /* Walk down the cmd_continuation list, and get rid of all the
587 discard_all_intermediate_continuations (void)
589 struct continuation
*continuation_ptr
;
591 while (intermediate_continuation
)
593 continuation_ptr
= intermediate_continuation
;
594 intermediate_continuation
= continuation_ptr
->next
;
595 xfree (continuation_ptr
);
601 /* Print a warning message. The first argument STRING is the warning
602 message, used as an fprintf format string, the second is the
603 va_list of arguments for that string. A warning is unfiltered (not
604 paginated) so that the user does not need to page through each
605 screen full of warnings when there are lots of them. */
608 vwarning (const char *string
, va_list args
)
610 if (deprecated_warning_hook
)
611 (*deprecated_warning_hook
) (string
, args
);
614 target_terminal_ours ();
615 wrap_here (""); /* Force out any buffered output */
616 gdb_flush (gdb_stdout
);
617 if (warning_pre_print
)
618 fputs_unfiltered (warning_pre_print
, gdb_stderr
);
619 vfprintf_unfiltered (gdb_stderr
, string
, args
);
620 fprintf_unfiltered (gdb_stderr
, "\n");
625 /* Print a warning message.
626 The first argument STRING is the warning message, used as a fprintf string,
627 and the remaining args are passed as arguments to it.
628 The primary difference between warnings and errors is that a warning
629 does not force the return to command level. */
632 warning (const char *string
, ...)
635 va_start (args
, string
);
636 vwarning (string
, args
);
640 /* Print an error message and return to command level.
641 The first argument STRING is the error message, used as a fprintf string,
642 and the remaining args are passed as arguments to it. */
645 verror (const char *string
, va_list args
)
647 throw_verror (GENERIC_ERROR
, string
, args
);
651 error (const char *string
, ...)
654 va_start (args
, string
);
655 throw_verror (GENERIC_ERROR
, string
, args
);
659 /* Print an error message and quit.
660 The first argument STRING is the error message, used as a fprintf string,
661 and the remaining args are passed as arguments to it. */
664 vfatal (const char *string
, va_list args
)
666 throw_vfatal (string
, args
);
670 fatal (const char *string
, ...)
673 va_start (args
, string
);
674 throw_vfatal (string
, args
);
679 error_stream (struct ui_file
*stream
)
682 char *message
= ui_file_xstrdup (stream
, &len
);
683 make_cleanup (xfree
, message
);
684 error (("%s"), message
);
687 /* Print a message reporting an internal error/warning. Ask the user
688 if they want to continue, dump core, or just exit. Return
689 something to indicate a quit. */
691 struct internal_problem
694 /* FIXME: cagney/2002-08-15: There should be ``maint set/show''
695 commands available for controlling these variables. */
696 enum auto_boolean should_quit
;
697 enum auto_boolean should_dump_core
;
700 /* Report a problem, internal to GDB, to the user. Once the problem
701 has been reported, and assuming GDB didn't quit, the caller can
702 either allow execution to resume or throw an error. */
704 static void ATTR_FORMAT (printf
, 4, 0)
705 internal_vproblem (struct internal_problem
*problem
,
706 const char *file
, int line
, const char *fmt
, va_list ap
)
713 /* Don't allow infinite error/warning recursion. */
715 static char msg
[] = "Recursive internal problem.\n";
723 fputs_unfiltered (msg
, gdb_stderr
);
724 abort (); /* NOTE: GDB has only three calls to abort(). */
727 write (STDERR_FILENO
, msg
, sizeof (msg
));
732 /* Try to get the message out and at the start of a new line. */
733 target_terminal_ours ();
736 /* Create a string containing the full error/warning message. Need
737 to call query with this full string, as otherwize the reason
738 (error/warning) and question become separated. Format using a
739 style similar to a compiler error message. Include extra detail
740 so that the user knows that they are living on the edge. */
743 msg
= xstrvprintf (fmt
, ap
);
744 reason
= xstrprintf ("\
746 A problem internal to GDB has been detected,\n\
747 further debugging may prove unreliable.", file
, line
, problem
->name
, msg
);
749 make_cleanup (xfree
, reason
);
752 switch (problem
->should_quit
)
754 case AUTO_BOOLEAN_AUTO
:
755 /* Default (yes/batch case) is to quit GDB. When in batch mode
756 this lessens the likelhood of GDB going into an infinate
758 quit_p
= query (_("%s\nQuit this debugging session? "), reason
);
760 case AUTO_BOOLEAN_TRUE
:
763 case AUTO_BOOLEAN_FALSE
:
767 internal_error (__FILE__
, __LINE__
, _("bad switch"));
770 switch (problem
->should_dump_core
)
772 case AUTO_BOOLEAN_AUTO
:
773 /* Default (yes/batch case) is to dump core. This leaves a GDB
774 `dropping' so that it is easier to see that something went
776 dump_core_p
= query (_("%s\nCreate a core file of GDB? "), reason
);
779 case AUTO_BOOLEAN_TRUE
:
782 case AUTO_BOOLEAN_FALSE
:
786 internal_error (__FILE__
, __LINE__
, _("bad switch"));
792 abort (); /* NOTE: GDB has only three calls to abort(). */
800 #ifdef HAVE_WORKING_FORK
802 abort (); /* NOTE: GDB has only three calls to abort(). */
810 static struct internal_problem internal_error_problem
= {
811 "internal-error", AUTO_BOOLEAN_AUTO
, AUTO_BOOLEAN_AUTO
815 internal_verror (const char *file
, int line
, const char *fmt
, va_list ap
)
817 internal_vproblem (&internal_error_problem
, file
, line
, fmt
, ap
);
818 deprecated_throw_reason (RETURN_ERROR
);
822 internal_error (const char *file
, int line
, const char *string
, ...)
825 va_start (ap
, string
);
826 internal_verror (file
, line
, string
, ap
);
830 static struct internal_problem internal_warning_problem
= {
831 "internal-warning", AUTO_BOOLEAN_AUTO
, AUTO_BOOLEAN_AUTO
835 internal_vwarning (const char *file
, int line
, const char *fmt
, va_list ap
)
837 internal_vproblem (&internal_warning_problem
, file
, line
, fmt
, ap
);
841 internal_warning (const char *file
, int line
, const char *string
, ...)
844 va_start (ap
, string
);
845 internal_vwarning (file
, line
, string
, ap
);
849 /* Print the system error message for errno, and also mention STRING
850 as the file name for which the error was encountered.
851 Then return to command level. */
854 perror_with_name (const char *string
)
859 err
= safe_strerror (errno
);
860 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
861 strcpy (combined
, string
);
862 strcat (combined
, ": ");
863 strcat (combined
, err
);
865 /* I understand setting these is a matter of taste. Still, some people
866 may clear errno but not know about bfd_error. Doing this here is not
868 bfd_set_error (bfd_error_no_error
);
871 error (_("%s."), combined
);
874 /* Print the system error message for ERRCODE, and also mention STRING
875 as the file name for which the error was encountered. */
878 print_sys_errmsg (const char *string
, int errcode
)
883 err
= safe_strerror (errcode
);
884 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
885 strcpy (combined
, string
);
886 strcat (combined
, ": ");
887 strcat (combined
, err
);
889 /* We want anything which was printed on stdout to come out first, before
891 gdb_flush (gdb_stdout
);
892 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
895 /* Control C eventually causes this to be called, at a convenient time. */
901 /* No steenking SIGINT will ever be coming our way when the
902 program is resumed. Don't lie. */
906 /* If there is no terminal switching for this target, then we can't
907 possibly get screwed by the lack of job control. */
908 || current_target
.to_terminal_ours
== NULL
)
911 fatal ("Quit (expect signal SIGINT when the program is resumed)");
916 /* Called when a memory allocation fails, with the number of bytes of
917 memory requested in SIZE. */
924 internal_error (__FILE__
, __LINE__
,
925 _("virtual memory exhausted: can't allocate %ld bytes."),
930 internal_error (__FILE__
, __LINE__
, _("virtual memory exhausted."));
934 /* The xmalloc() (libiberty.h) family of memory management routines.
936 These are like the ISO-C malloc() family except that they implement
937 consistent semantics and guard against typical memory management
940 /* NOTE: These are declared using PTR to ensure consistency with
941 "libiberty.h". xfree() is GDB local. */
944 xmalloc (size_t size
)
948 /* See libiberty/xmalloc.c. This function need's to match that's
949 semantics. It never returns NULL. */
953 val
= malloc (size
); /* OK: malloc */
961 xzalloc (size_t size
)
963 return xcalloc (1, size
);
967 xrealloc (PTR ptr
, size_t size
) /* OK: PTR */
971 /* See libiberty/xmalloc.c. This function need's to match that's
972 semantics. It never returns NULL. */
977 val
= realloc (ptr
, size
); /* OK: realloc */
979 val
= malloc (size
); /* OK: malloc */
987 xcalloc (size_t number
, size_t size
)
991 /* See libiberty/xmalloc.c. This function need's to match that's
992 semantics. It never returns NULL. */
993 if (number
== 0 || size
== 0)
999 mem
= calloc (number
, size
); /* OK: xcalloc */
1001 nomem (number
* size
);
1010 free (ptr
); /* OK: free */
1014 /* Like asprintf/vasprintf but get an internal_error if the call
1018 xstrprintf (const char *format
, ...)
1022 va_start (args
, format
);
1023 ret
= xstrvprintf (format
, args
);
1029 xasprintf (char **ret
, const char *format
, ...)
1032 va_start (args
, format
);
1033 (*ret
) = xstrvprintf (format
, args
);
1038 xvasprintf (char **ret
, const char *format
, va_list ap
)
1040 (*ret
) = xstrvprintf (format
, ap
);
1044 xstrvprintf (const char *format
, va_list ap
)
1047 int status
= vasprintf (&ret
, format
, ap
);
1048 /* NULL is returned when there was a memory allocation problem, or
1049 any other error (for instance, a bad format string). A negative
1050 status (the printed length) with a non-NULL buffer should never
1051 happen, but just to be sure. */
1052 if (ret
== NULL
|| status
< 0)
1053 internal_error (__FILE__
, __LINE__
, _("vasprintf call failed"));
1058 xsnprintf (char *str
, size_t size
, const char *format
, ...)
1063 va_start (args
, format
);
1064 ret
= vsnprintf (str
, size
, format
, args
);
1065 gdb_assert (ret
< size
);
1071 /* My replacement for the read system call.
1072 Used like `read' but keeps going if `read' returns too soon. */
1075 myread (int desc
, char *addr
, int len
)
1082 val
= read (desc
, addr
, len
);
1086 return orglen
- len
;
1093 /* Make a copy of the string at PTR with SIZE characters
1094 (and add a null character at the end in the copy).
1095 Uses malloc to get the space. Returns the address of the copy. */
1098 savestring (const char *ptr
, size_t size
)
1100 char *p
= (char *) xmalloc (size
+ 1);
1101 memcpy (p
, ptr
, size
);
1107 print_spaces (int n
, struct ui_file
*file
)
1109 fputs_unfiltered (n_spaces (n
), file
);
1112 /* Print a host address. */
1115 gdb_print_host_address (const void *addr
, struct ui_file
*stream
)
1118 /* We could use the %p conversion specifier to fprintf if we had any
1119 way of knowing whether this host supports it. But the following
1120 should work on the Alpha and on 32 bit machines. */
1122 fprintf_filtered (stream
, "0x%lx", (unsigned long) addr
);
1126 /* This function supports the query, nquery, and yquery functions.
1127 Ask user a y-or-n question and return 0 if answer is no, 1 if
1128 answer is yes, or default the answer to the specified default
1129 (for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a
1130 default answer, or '\0' for no default.
1131 CTLSTR is the control string and should end in "? ". It should
1132 not say how to answer, because we do that.
1133 ARGS are the arguments passed along with the CTLSTR argument to
1136 static int ATTR_FORMAT (printf
, 1, 0)
1137 defaulted_query (const char *ctlstr
, const char defchar
, va_list args
)
1143 char def_answer
, not_def_answer
;
1144 char *y_string
, *n_string
, *question
;
1146 /* Set up according to which answer is the default. */
1147 if (defchar
== '\0')
1151 not_def_answer
= 'N';
1155 else if (defchar
== 'y')
1159 not_def_answer
= 'N';
1167 not_def_answer
= 'Y';
1172 /* Automatically answer the default value if the user did not want
1177 /* If input isn't coming from the user directly, just say what
1178 question we're asking, and then answer "yes" automatically. This
1179 way, important error messages don't get lost when talking to GDB
1181 if (! input_from_terminal_p ())
1184 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1186 printf_filtered (_("(%s or %s) [answered %c; input not from terminal]\n"),
1187 y_string
, n_string
, def_answer
);
1188 gdb_flush (gdb_stdout
);
1193 /* Automatically answer the default value if input is not from the user
1194 directly, or if the user did not want prompts. */
1195 if (!input_from_terminal_p () || !caution
)
1198 if (deprecated_query_hook
)
1200 return deprecated_query_hook (ctlstr
, args
);
1203 /* Format the question outside of the loop, to avoid reusing args. */
1204 question
= xstrvprintf (ctlstr
, args
);
1208 wrap_here (""); /* Flush any buffered output */
1209 gdb_flush (gdb_stdout
);
1211 if (annotation_level
> 1)
1212 printf_filtered (("\n\032\032pre-query\n"));
1214 fputs_filtered (question
, gdb_stdout
);
1215 printf_filtered (_("(%s or %s) "), y_string
, n_string
);
1217 if (annotation_level
> 1)
1218 printf_filtered (("\n\032\032query\n"));
1221 gdb_flush (gdb_stdout
);
1223 answer
= fgetc (stdin
);
1224 clearerr (stdin
); /* in case of C-d */
1225 if (answer
== EOF
) /* C-d */
1227 printf_filtered ("EOF [assumed %c]\n", def_answer
);
1231 /* Eat rest of input line, to EOF or newline */
1235 ans2
= fgetc (stdin
);
1238 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1242 /* Check answer. For the non-default, the user must specify
1243 the non-default explicitly. */
1244 if (answer
== not_def_answer
)
1246 retval
= !def_value
;
1249 /* Otherwise, if a default was specified, the user may either
1250 specify the required input or have it default by entering
1252 if (answer
== def_answer
1253 || (defchar
!= '\0' &&
1254 (answer
== '\n' || answer
== '\r' || answer
== EOF
)))
1259 /* Invalid entries are not defaulted and require another selection. */
1260 printf_filtered (_("Please answer %s or %s.\n"),
1261 y_string
, n_string
);
1265 if (annotation_level
> 1)
1266 printf_filtered (("\n\032\032post-query\n"));
1271 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1272 answer is yes, or 0 if answer is defaulted.
1273 Takes three args which are given to printf to print the question.
1274 The first, a control string, should end in "? ".
1275 It should not say how to answer, because we do that. */
1278 nquery (const char *ctlstr
, ...)
1282 va_start (args
, ctlstr
);
1283 return defaulted_query (ctlstr
, 'n', args
);
1287 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1288 answer is yes, or 1 if answer is defaulted.
1289 Takes three args which are given to printf to print the question.
1290 The first, a control string, should end in "? ".
1291 It should not say how to answer, because we do that. */
1294 yquery (const char *ctlstr
, ...)
1298 va_start (args
, ctlstr
);
1299 return defaulted_query (ctlstr
, 'y', args
);
1303 /* Ask user a y-or-n question and return 1 iff answer is yes.
1304 Takes three args which are given to printf to print the question.
1305 The first, a control string, should end in "? ".
1306 It should not say how to answer, because we do that. */
1309 query (const char *ctlstr
, ...)
1313 va_start (args
, ctlstr
);
1314 return defaulted_query (ctlstr
, '\0', args
);
1318 /* Print an error message saying that we couldn't make sense of a
1319 \^mumble sequence in a string or character constant. START and END
1320 indicate a substring of some larger string that contains the
1321 erroneous backslash sequence, missing the initial backslash. */
1323 no_control_char_error (const char *start
, const char *end
)
1325 int len
= end
- start
;
1326 char *copy
= alloca (end
- start
+ 1);
1328 memcpy (copy
, start
, len
);
1331 error (_("There is no control character `\\%s' in the `%s' character set."),
1332 copy
, target_charset ());
1335 /* Parse a C escape sequence. STRING_PTR points to a variable
1336 containing a pointer to the string to parse. That pointer
1337 should point to the character after the \. That pointer
1338 is updated past the characters we use. The value of the
1339 escape sequence is returned.
1341 A negative value means the sequence \ newline was seen,
1342 which is supposed to be equivalent to nothing at all.
1344 If \ is followed by a null character, we return a negative
1345 value and leave the string pointer pointing at the null character.
1347 If \ is followed by 000, we return 0 and leave the string pointer
1348 after the zeros. A value of 0 does not mean end of string. */
1351 parse_escape (char **string_ptr
)
1354 int c
= *(*string_ptr
)++;
1355 if (c_parse_backslash (c
, &target_char
))
1367 /* Remember where this escape sequence started, for reporting
1369 char *sequence_start_pos
= *string_ptr
- 1;
1371 c
= *(*string_ptr
)++;
1375 /* XXXCHARSET: What is `delete' in the host character set? */
1378 if (!host_char_to_target (c
, &target_char
))
1379 error (_("There is no character corresponding to `Delete' "
1380 "in the target character set `%s'."), host_charset ());
1385 target_char
= parse_escape (string_ptr
);
1388 if (!host_char_to_target (c
, &target_char
))
1389 no_control_char_error (sequence_start_pos
, *string_ptr
);
1392 /* Now target_char is something like `c', and we want to find
1393 its control-character equivalent. */
1394 if (!target_char_to_control_char (target_char
, &target_char
))
1395 no_control_char_error (sequence_start_pos
, *string_ptr
);
1400 /* XXXCHARSET: we need to use isdigit and value-of-digit
1401 methods of the host character set here. */
1417 if (c
>= '0' && c
<= '7')
1431 if (!host_char_to_target (c
, &target_char
))
1433 ("The escape sequence `\%c' is equivalent to plain `%c', which"
1434 " has no equivalent\n" "in the `%s' character set.", c
, c
,
1440 /* Print the character C on STREAM as part of the contents of a literal
1441 string whose delimiter is QUOTER. Note that this routine should only
1442 be call for printing things which are independent of the language
1443 of the program being debugged. */
1446 printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*),
1447 void (*do_fprintf
) (struct ui_file
*, const char *, ...)
1448 ATTRIBUTE_FPTR_PRINTF_2
, struct ui_file
*stream
, int quoter
)
1451 c
&= 0xFF; /* Avoid sign bit follies */
1453 if (c
< 0x20 || /* Low control chars */
1454 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1455 (sevenbit_strings
&& c
>= 0x80))
1456 { /* high order bit set */
1460 do_fputs ("\\n", stream
);
1463 do_fputs ("\\b", stream
);
1466 do_fputs ("\\t", stream
);
1469 do_fputs ("\\f", stream
);
1472 do_fputs ("\\r", stream
);
1475 do_fputs ("\\e", stream
);
1478 do_fputs ("\\a", stream
);
1481 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
1487 if (c
== '\\' || c
== quoter
)
1488 do_fputs ("\\", stream
);
1489 do_fprintf (stream
, "%c", c
);
1493 /* Print the character C on STREAM as part of the contents of a
1494 literal string whose delimiter is QUOTER. Note that these routines
1495 should only be call for printing things which are independent of
1496 the language of the program being debugged. */
1499 fputstr_filtered (const char *str
, int quoter
, struct ui_file
*stream
)
1502 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1506 fputstr_unfiltered (const char *str
, int quoter
, struct ui_file
*stream
)
1509 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1513 fputstrn_filtered (const char *str
, int n
, int quoter
,
1514 struct ui_file
*stream
)
1517 for (i
= 0; i
< n
; i
++)
1518 printchar (str
[i
], fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1522 fputstrn_unfiltered (const char *str
, int n
, int quoter
,
1523 struct ui_file
*stream
)
1526 for (i
= 0; i
< n
; i
++)
1527 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1531 /* Number of lines per page or UINT_MAX if paging is disabled. */
1532 static unsigned int lines_per_page
;
1534 show_lines_per_page (struct ui_file
*file
, int from_tty
,
1535 struct cmd_list_element
*c
, const char *value
)
1537 fprintf_filtered (file
, _("\
1538 Number of lines gdb thinks are in a page is %s.\n"),
1542 /* Number of chars per line or UINT_MAX if line folding is disabled. */
1543 static unsigned int chars_per_line
;
1545 show_chars_per_line (struct ui_file
*file
, int from_tty
,
1546 struct cmd_list_element
*c
, const char *value
)
1548 fprintf_filtered (file
, _("\
1549 Number of characters gdb thinks are in a line is %s.\n"),
1553 /* Current count of lines printed on this page, chars on this line. */
1554 static unsigned int lines_printed
, chars_printed
;
1556 /* Buffer and start column of buffered text, for doing smarter word-
1557 wrapping. When someone calls wrap_here(), we start buffering output
1558 that comes through fputs_filtered(). If we see a newline, we just
1559 spit it out and forget about the wrap_here(). If we see another
1560 wrap_here(), we spit it out and remember the newer one. If we see
1561 the end of the line, we spit out a newline, the indent, and then
1562 the buffered output. */
1564 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1565 are waiting to be output (they have already been counted in chars_printed).
1566 When wrap_buffer[0] is null, the buffer is empty. */
1567 static char *wrap_buffer
;
1569 /* Pointer in wrap_buffer to the next character to fill. */
1570 static char *wrap_pointer
;
1572 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1574 static char *wrap_indent
;
1576 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1577 is not in effect. */
1578 static int wrap_column
;
1581 /* Inialize the number of lines per page and chars per line. */
1584 init_page_info (void)
1587 if (!tui_get_command_dimension (&chars_per_line
, &lines_per_page
))
1592 #if defined(__GO32__)
1593 rows
= ScreenRows ();
1594 cols
= ScreenCols ();
1595 lines_per_page
= rows
;
1596 chars_per_line
= cols
;
1598 /* Make sure Readline has initialized its terminal settings. */
1599 rl_reset_terminal (NULL
);
1601 /* Get the screen size from Readline. */
1602 rl_get_screen_size (&rows
, &cols
);
1603 lines_per_page
= rows
;
1604 chars_per_line
= cols
;
1606 /* Readline should have fetched the termcap entry for us. */
1607 if (tgetnum ("li") < 0 || getenv ("EMACS"))
1609 /* The number of lines per page is not mentioned in the
1610 terminal description. This probably means that paging is
1611 not useful (e.g. emacs shell window), so disable paging. */
1612 lines_per_page
= UINT_MAX
;
1615 /* FIXME: Get rid of this junk. */
1616 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1617 SIGWINCH_HANDLER (SIGWINCH
);
1620 /* If the output is not a terminal, don't paginate it. */
1621 if (!ui_file_isatty (gdb_stdout
))
1622 lines_per_page
= UINT_MAX
;
1630 /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */
1633 set_screen_size (void)
1635 int rows
= lines_per_page
;
1636 int cols
= chars_per_line
;
1644 /* Update Readline's idea of the terminal size. */
1645 rl_set_screen_size (rows
, cols
);
1648 /* Reinitialize WRAP_BUFFER according to the current value of
1654 if (chars_per_line
== 0)
1659 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1660 wrap_buffer
[0] = '\0';
1663 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1664 wrap_pointer
= wrap_buffer
; /* Start it at the beginning. */
1668 set_width_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1675 set_height_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1680 /* Wait, so the user can read what's on the screen. Prompt the user
1681 to continue by pressing RETURN. */
1684 prompt_for_continue (void)
1687 char cont_prompt
[120];
1689 if (annotation_level
> 1)
1690 printf_unfiltered (("\n\032\032pre-prompt-for-continue\n"));
1692 strcpy (cont_prompt
,
1693 "---Type <return> to continue, or q <return> to quit---");
1694 if (annotation_level
> 1)
1695 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
1697 /* We must do this *before* we call gdb_readline, else it will eventually
1698 call us -- thinking that we're trying to print beyond the end of the
1700 reinitialize_more_filter ();
1703 /* On a real operating system, the user can quit with SIGINT.
1706 'q' is provided on all systems so users don't have to change habits
1707 from system to system, and because telling them what to do in
1708 the prompt is more user-friendly than expecting them to think of
1710 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1711 whereas control-C to gdb_readline will cause the user to get dumped
1713 ignore
= gdb_readline_wrapper (cont_prompt
);
1715 if (annotation_level
> 1)
1716 printf_unfiltered (("\n\032\032post-prompt-for-continue\n"));
1721 while (*p
== ' ' || *p
== '\t')
1724 async_request_quit (0);
1729 /* Now we have to do this again, so that GDB will know that it doesn't
1730 need to save the ---Type <return>--- line at the top of the screen. */
1731 reinitialize_more_filter ();
1733 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1736 /* Reinitialize filter; ie. tell it to reset to original values. */
1739 reinitialize_more_filter (void)
1745 /* Indicate that if the next sequence of characters overflows the line,
1746 a newline should be inserted here rather than when it hits the end.
1747 If INDENT is non-null, it is a string to be printed to indent the
1748 wrapped part on the next line. INDENT must remain accessible until
1749 the next call to wrap_here() or until a newline is printed through
1752 If the line is already overfull, we immediately print a newline and
1753 the indentation, and disable further wrapping.
1755 If we don't know the width of lines, but we know the page height,
1756 we must not wrap words, but should still keep track of newlines
1757 that were explicitly printed.
1759 INDENT should not contain tabs, as that will mess up the char count
1760 on the next line. FIXME.
1762 This routine is guaranteed to force out any output which has been
1763 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1764 used to force out output from the wrap_buffer. */
1767 wrap_here (char *indent
)
1769 /* This should have been allocated, but be paranoid anyway. */
1771 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
1775 *wrap_pointer
= '\0';
1776 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
1778 wrap_pointer
= wrap_buffer
;
1779 wrap_buffer
[0] = '\0';
1780 if (chars_per_line
== UINT_MAX
) /* No line overflow checking */
1784 else if (chars_printed
>= chars_per_line
)
1786 puts_filtered ("\n");
1788 puts_filtered (indent
);
1793 wrap_column
= chars_printed
;
1797 wrap_indent
= indent
;
1801 /* Print input string to gdb_stdout, filtered, with wrap,
1802 arranging strings in columns of n chars. String can be
1803 right or left justified in the column. Never prints
1804 trailing spaces. String should never be longer than
1805 width. FIXME: this could be useful for the EXAMINE
1806 command, which currently doesn't tabulate very well */
1809 puts_filtered_tabular (char *string
, int width
, int right
)
1815 gdb_assert (chars_per_line
> 0);
1816 if (chars_per_line
== UINT_MAX
)
1818 fputs_filtered (string
, gdb_stdout
);
1819 fputs_filtered ("\n", gdb_stdout
);
1823 if (((chars_printed
- 1) / width
+ 2) * width
>= chars_per_line
)
1824 fputs_filtered ("\n", gdb_stdout
);
1826 if (width
>= chars_per_line
)
1827 width
= chars_per_line
- 1;
1829 stringlen
= strlen (string
);
1831 if (chars_printed
> 0)
1832 spaces
= width
- (chars_printed
- 1) % width
- 1;
1834 spaces
+= width
- stringlen
;
1836 spacebuf
= alloca (spaces
+ 1);
1837 spacebuf
[spaces
] = '\0';
1839 spacebuf
[spaces
] = ' ';
1841 fputs_filtered (spacebuf
, gdb_stdout
);
1842 fputs_filtered (string
, gdb_stdout
);
1846 /* Ensure that whatever gets printed next, using the filtered output
1847 commands, starts at the beginning of the line. I.E. if there is
1848 any pending output for the current line, flush it and start a new
1849 line. Otherwise do nothing. */
1854 if (chars_printed
> 0)
1856 puts_filtered ("\n");
1861 /* Like fputs but if FILTER is true, pause after every screenful.
1863 Regardless of FILTER can wrap at points other than the final
1864 character of a line.
1866 Unlike fputs, fputs_maybe_filtered does not return a value.
1867 It is OK for LINEBUFFER to be NULL, in which case just don't print
1870 Note that a longjmp to top level may occur in this routine (only if
1871 FILTER is true) (since prompt_for_continue may do so) so this
1872 routine should not be called when cleanups are not in place. */
1875 fputs_maybe_filtered (const char *linebuffer
, struct ui_file
*stream
,
1878 const char *lineptr
;
1880 if (linebuffer
== 0)
1883 /* Don't do any filtering if it is disabled. */
1884 if ((stream
!= gdb_stdout
) || !pagination_enabled
1885 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
))
1887 fputs_unfiltered (linebuffer
, stream
);
1891 /* Go through and output each character. Show line extension
1892 when this is necessary; prompt user for new page when this is
1895 lineptr
= linebuffer
;
1898 /* Possible new page. */
1899 if (filter
&& (lines_printed
>= lines_per_page
- 1))
1900 prompt_for_continue ();
1902 while (*lineptr
&& *lineptr
!= '\n')
1904 /* Print a single line. */
1905 if (*lineptr
== '\t')
1908 *wrap_pointer
++ = '\t';
1910 fputc_unfiltered ('\t', stream
);
1911 /* Shifting right by 3 produces the number of tab stops
1912 we have already passed, and then adding one and
1913 shifting left 3 advances to the next tab stop. */
1914 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
1920 *wrap_pointer
++ = *lineptr
;
1922 fputc_unfiltered (*lineptr
, stream
);
1927 if (chars_printed
>= chars_per_line
)
1929 unsigned int save_chars
= chars_printed
;
1933 /* If we aren't actually wrapping, don't output newline --
1934 if chars_per_line is right, we probably just overflowed
1935 anyway; if it's wrong, let us keep going. */
1937 fputc_unfiltered ('\n', stream
);
1939 /* Possible new page. */
1940 if (lines_printed
>= lines_per_page
- 1)
1941 prompt_for_continue ();
1943 /* Now output indentation and wrapped string */
1946 fputs_unfiltered (wrap_indent
, stream
);
1947 *wrap_pointer
= '\0'; /* Null-terminate saved stuff */
1948 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it */
1949 /* FIXME, this strlen is what prevents wrap_indent from
1950 containing tabs. However, if we recurse to print it
1951 and count its chars, we risk trouble if wrap_indent is
1952 longer than (the user settable) chars_per_line.
1953 Note also that this can set chars_printed > chars_per_line
1954 if we are printing a long string. */
1955 chars_printed
= strlen (wrap_indent
)
1956 + (save_chars
- wrap_column
);
1957 wrap_pointer
= wrap_buffer
; /* Reset buffer */
1958 wrap_buffer
[0] = '\0';
1959 wrap_column
= 0; /* And disable fancy wrap */
1964 if (*lineptr
== '\n')
1967 wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */
1969 fputc_unfiltered ('\n', stream
);
1976 fputs_filtered (const char *linebuffer
, struct ui_file
*stream
)
1978 fputs_maybe_filtered (linebuffer
, stream
, 1);
1982 putchar_unfiltered (int c
)
1985 ui_file_write (gdb_stdout
, &buf
, 1);
1989 /* Write character C to gdb_stdout using GDB's paging mechanism and return C.
1990 May return nonlocally. */
1993 putchar_filtered (int c
)
1995 return fputc_filtered (c
, gdb_stdout
);
1999 fputc_unfiltered (int c
, struct ui_file
*stream
)
2002 ui_file_write (stream
, &buf
, 1);
2007 fputc_filtered (int c
, struct ui_file
*stream
)
2013 fputs_filtered (buf
, stream
);
2017 /* puts_debug is like fputs_unfiltered, except it prints special
2018 characters in printable fashion. */
2021 puts_debug (char *prefix
, char *string
, char *suffix
)
2025 /* Print prefix and suffix after each line. */
2026 static int new_line
= 1;
2027 static int return_p
= 0;
2028 static char *prev_prefix
= "";
2029 static char *prev_suffix
= "";
2031 if (*string
== '\n')
2034 /* If the prefix is changing, print the previous suffix, a new line,
2035 and the new prefix. */
2036 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
2038 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
2039 fputs_unfiltered ("\n", gdb_stdlog
);
2040 fputs_unfiltered (prefix
, gdb_stdlog
);
2043 /* Print prefix if we printed a newline during the previous call. */
2047 fputs_unfiltered (prefix
, gdb_stdlog
);
2050 prev_prefix
= prefix
;
2051 prev_suffix
= suffix
;
2053 /* Output characters in a printable format. */
2054 while ((ch
= *string
++) != '\0')
2060 fputc_unfiltered (ch
, gdb_stdlog
);
2063 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
2067 fputs_unfiltered ("\\\\", gdb_stdlog
);
2070 fputs_unfiltered ("\\b", gdb_stdlog
);
2073 fputs_unfiltered ("\\f", gdb_stdlog
);
2077 fputs_unfiltered ("\\n", gdb_stdlog
);
2080 fputs_unfiltered ("\\r", gdb_stdlog
);
2083 fputs_unfiltered ("\\t", gdb_stdlog
);
2086 fputs_unfiltered ("\\v", gdb_stdlog
);
2090 return_p
= ch
== '\r';
2093 /* Print suffix if we printed a newline. */
2096 fputs_unfiltered (suffix
, gdb_stdlog
);
2097 fputs_unfiltered ("\n", gdb_stdlog
);
2102 /* Print a variable number of ARGS using format FORMAT. If this
2103 information is going to put the amount written (since the last call
2104 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
2105 call prompt_for_continue to get the users permision to continue.
2107 Unlike fprintf, this function does not return a value.
2109 We implement three variants, vfprintf (takes a vararg list and stream),
2110 fprintf (takes a stream to write on), and printf (the usual).
2112 Note also that a longjmp to top level may occur in this routine
2113 (since prompt_for_continue may do so) so this routine should not be
2114 called when cleanups are not in place. */
2117 vfprintf_maybe_filtered (struct ui_file
*stream
, const char *format
,
2118 va_list args
, int filter
)
2121 struct cleanup
*old_cleanups
;
2123 linebuffer
= xstrvprintf (format
, args
);
2124 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2125 fputs_maybe_filtered (linebuffer
, stream
, filter
);
2126 do_cleanups (old_cleanups
);
2131 vfprintf_filtered (struct ui_file
*stream
, const char *format
, va_list args
)
2133 vfprintf_maybe_filtered (stream
, format
, args
, 1);
2137 vfprintf_unfiltered (struct ui_file
*stream
, const char *format
, va_list args
)
2140 struct cleanup
*old_cleanups
;
2142 linebuffer
= xstrvprintf (format
, args
);
2143 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2144 if (debug_timestamp
&& stream
== gdb_stdlog
)
2149 gettimeofday (&tm
, NULL
);
2150 timestamp
= xstrprintf ("%ld:%ld ", (long) tm
.tv_sec
, (long) tm
.tv_usec
);
2151 make_cleanup (xfree
, timestamp
);
2152 fputs_unfiltered (timestamp
, stream
);
2154 fputs_unfiltered (linebuffer
, stream
);
2155 do_cleanups (old_cleanups
);
2159 vprintf_filtered (const char *format
, va_list args
)
2161 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
2165 vprintf_unfiltered (const char *format
, va_list args
)
2167 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2171 fprintf_filtered (struct ui_file
*stream
, const char *format
, ...)
2174 va_start (args
, format
);
2175 vfprintf_filtered (stream
, format
, args
);
2180 fprintf_unfiltered (struct ui_file
*stream
, const char *format
, ...)
2183 va_start (args
, format
);
2184 vfprintf_unfiltered (stream
, format
, args
);
2188 /* Like fprintf_filtered, but prints its result indented.
2189 Called as fprintfi_filtered (spaces, stream, format, ...); */
2192 fprintfi_filtered (int spaces
, struct ui_file
*stream
, const char *format
,
2196 va_start (args
, format
);
2197 print_spaces_filtered (spaces
, stream
);
2199 vfprintf_filtered (stream
, format
, args
);
2205 printf_filtered (const char *format
, ...)
2208 va_start (args
, format
);
2209 vfprintf_filtered (gdb_stdout
, format
, args
);
2215 printf_unfiltered (const char *format
, ...)
2218 va_start (args
, format
);
2219 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2223 /* Like printf_filtered, but prints it's result indented.
2224 Called as printfi_filtered (spaces, format, ...); */
2227 printfi_filtered (int spaces
, const char *format
, ...)
2230 va_start (args
, format
);
2231 print_spaces_filtered (spaces
, gdb_stdout
);
2232 vfprintf_filtered (gdb_stdout
, format
, args
);
2236 /* Easy -- but watch out!
2238 This routine is *not* a replacement for puts()! puts() appends a newline.
2239 This one doesn't, and had better not! */
2242 puts_filtered (const char *string
)
2244 fputs_filtered (string
, gdb_stdout
);
2248 puts_unfiltered (const char *string
)
2250 fputs_unfiltered (string
, gdb_stdout
);
2253 /* Return a pointer to N spaces and a null. The pointer is good
2254 until the next call to here. */
2259 static char *spaces
= 0;
2260 static int max_spaces
= -1;
2266 spaces
= (char *) xmalloc (n
+ 1);
2267 for (t
= spaces
+ n
; t
!= spaces
;)
2273 return spaces
+ max_spaces
- n
;
2276 /* Print N spaces. */
2278 print_spaces_filtered (int n
, struct ui_file
*stream
)
2280 fputs_filtered (n_spaces (n
), stream
);
2283 /* C++/ObjC demangler stuff. */
2285 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2286 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2287 If the name is not mangled, or the language for the name is unknown, or
2288 demangling is off, the name is printed in its "raw" form. */
2291 fprintf_symbol_filtered (struct ui_file
*stream
, char *name
,
2292 enum language lang
, int arg_mode
)
2298 /* If user wants to see raw output, no problem. */
2301 fputs_filtered (name
, stream
);
2305 demangled
= language_demangle (language_def (lang
), name
, arg_mode
);
2306 fputs_filtered (demangled
? demangled
: name
, stream
);
2307 if (demangled
!= NULL
)
2315 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2316 differences in whitespace. Returns 0 if they match, non-zero if they
2317 don't (slightly different than strcmp()'s range of return values).
2319 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2320 This "feature" is useful when searching for matching C++ function names
2321 (such as if the user types 'break FOO', where FOO is a mangled C++
2325 strcmp_iw (const char *string1
, const char *string2
)
2327 while ((*string1
!= '\0') && (*string2
!= '\0'))
2329 while (isspace (*string1
))
2333 while (isspace (*string2
))
2337 if (*string1
!= *string2
)
2341 if (*string1
!= '\0')
2347 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2350 /* This is like strcmp except that it ignores whitespace and treats
2351 '(' as the first non-NULL character in terms of ordering. Like
2352 strcmp (and unlike strcmp_iw), it returns negative if STRING1 <
2353 STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2
2354 according to that ordering.
2356 If a list is sorted according to this function and if you want to
2357 find names in the list that match some fixed NAME according to
2358 strcmp_iw(LIST_ELT, NAME), then the place to start looking is right
2359 where this function would put NAME.
2361 Here are some examples of why using strcmp to sort is a bad idea:
2365 Say your partial symtab contains: "foo<char *>", "goo". Then, if
2366 we try to do a search for "foo<char*>", strcmp will locate this
2367 after "foo<char *>" and before "goo". Then lookup_partial_symbol
2368 will start looking at strings beginning with "goo", and will never
2369 see the correct match of "foo<char *>".
2371 Parenthesis example:
2373 In practice, this is less like to be an issue, but I'll give it a
2374 shot. Let's assume that '$' is a legitimate character to occur in
2375 symbols. (Which may well even be the case on some systems.) Then
2376 say that the partial symbol table contains "foo$" and "foo(int)".
2377 strcmp will put them in this order, since '$' < '('. Now, if the
2378 user searches for "foo", then strcmp will sort "foo" before "foo$".
2379 Then lookup_partial_symbol will notice that strcmp_iw("foo$",
2380 "foo") is false, so it won't proceed to the actual match of
2381 "foo(int)" with "foo". */
2384 strcmp_iw_ordered (const char *string1
, const char *string2
)
2386 while ((*string1
!= '\0') && (*string2
!= '\0'))
2388 while (isspace (*string1
))
2392 while (isspace (*string2
))
2396 if (*string1
!= *string2
)
2400 if (*string1
!= '\0')
2409 /* Characters are non-equal unless they're both '\0'; we want to
2410 make sure we get the comparison right according to our
2411 comparison in the cases where one of them is '\0' or '('. */
2413 if (*string2
== '\0')
2418 if (*string2
== '\0')
2423 if (*string2
== '(')
2426 return *string1
- *string2
;
2430 /* A simple comparison function with opposite semantics to strcmp. */
2433 streq (const char *lhs
, const char *rhs
)
2435 return !strcmp (lhs
, rhs
);
2441 ** Answer whether string_to_compare is a full or partial match to
2442 ** template_string. The partial match must be in sequence starting
2446 subset_compare (char *string_to_compare
, char *template_string
)
2449 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
2450 && strlen (string_to_compare
) <= strlen (template_string
))
2453 (template_string
, string_to_compare
, strlen (string_to_compare
)) == 0);
2460 pagination_on_command (char *arg
, int from_tty
)
2462 pagination_enabled
= 1;
2466 pagination_off_command (char *arg
, int from_tty
)
2468 pagination_enabled
= 0;
2472 show_debug_timestamp (struct ui_file
*file
, int from_tty
,
2473 struct cmd_list_element
*c
, const char *value
)
2475 fprintf_filtered (file
, _("Timestamping debugging messages is %s.\n"), value
);
2480 initialize_utils (void)
2482 struct cmd_list_element
*c
;
2484 add_setshow_uinteger_cmd ("width", class_support
, &chars_per_line
, _("\
2485 Set number of characters gdb thinks are in a line."), _("\
2486 Show number of characters gdb thinks are in a line."), NULL
,
2488 show_chars_per_line
,
2489 &setlist
, &showlist
);
2491 add_setshow_uinteger_cmd ("height", class_support
, &lines_per_page
, _("\
2492 Set number of lines gdb thinks are in a page."), _("\
2493 Show number of lines gdb thinks are in a page."), NULL
,
2495 show_lines_per_page
,
2496 &setlist
, &showlist
);
2500 add_setshow_boolean_cmd ("demangle", class_support
, &demangle
, _("\
2501 Set demangling of encoded C++/ObjC names when displaying symbols."), _("\
2502 Show demangling of encoded C++/ObjC names when displaying symbols."), NULL
,
2505 &setprintlist
, &showprintlist
);
2507 add_setshow_boolean_cmd ("pagination", class_support
,
2508 &pagination_enabled
, _("\
2509 Set state of pagination."), _("\
2510 Show state of pagination."), NULL
,
2512 show_pagination_enabled
,
2513 &setlist
, &showlist
);
2517 add_com ("am", class_support
, pagination_on_command
,
2518 _("Enable pagination"));
2519 add_com ("sm", class_support
, pagination_off_command
,
2520 _("Disable pagination"));
2523 add_setshow_boolean_cmd ("sevenbit-strings", class_support
,
2524 &sevenbit_strings
, _("\
2525 Set printing of 8-bit characters in strings as \\nnn."), _("\
2526 Show printing of 8-bit characters in strings as \\nnn."), NULL
,
2528 show_sevenbit_strings
,
2529 &setprintlist
, &showprintlist
);
2531 add_setshow_boolean_cmd ("asm-demangle", class_support
, &asm_demangle
, _("\
2532 Set demangling of C++/ObjC names in disassembly listings."), _("\
2533 Show demangling of C++/ObjC names in disassembly listings."), NULL
,
2536 &setprintlist
, &showprintlist
);
2538 add_setshow_boolean_cmd ("timestamp", class_maintenance
,
2539 &debug_timestamp
, _("\
2540 Set timestamping of debugging messages."), _("\
2541 Show timestamping of debugging messages."), _("\
2542 When set, debugging messages will be marked with seconds and microseconds."),
2544 show_debug_timestamp
,
2545 &setdebuglist
, &showdebuglist
);
2548 /* Machine specific function to handle SIGWINCH signal. */
2550 #ifdef SIGWINCH_HANDLER_BODY
2551 SIGWINCH_HANDLER_BODY
2553 /* print routines to handle variable size regs, etc. */
2554 /* temporary storage using circular buffer */
2560 static char buf
[NUMCELLS
][CELLSIZE
];
2561 static int cell
= 0;
2562 if (++cell
>= NUMCELLS
)
2570 return (gdbarch_addr_bit (current_gdbarch
) / 8 * 2);
2574 paddr (CORE_ADDR addr
)
2576 return phex (addr
, gdbarch_addr_bit (current_gdbarch
) / 8);
2580 paddr_nz (CORE_ADDR addr
)
2582 return phex_nz (addr
, gdbarch_addr_bit (current_gdbarch
) / 8);
2586 paddress (CORE_ADDR addr
)
2588 /* Truncate address to the size of a target address, avoiding shifts
2589 larger or equal than the width of a CORE_ADDR. The local
2590 variable ADDR_BIT stops the compiler reporting a shift overflow
2591 when it won't occur. */
2592 /* NOTE: This assumes that the significant address information is
2593 kept in the least significant bits of ADDR - the upper bits were
2594 either zero or sign extended. Should gdbarch_address_to_pointer or
2595 some ADDRESS_TO_PRINTABLE() be used to do the conversion? */
2597 int addr_bit
= gdbarch_addr_bit (current_gdbarch
);
2599 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2600 addr
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2601 return hex_string (addr
);
2605 decimal2str (char *sign
, ULONGEST addr
, int width
)
2607 /* Steal code from valprint.c:print_decimal(). Should this worry
2608 about the real size of addr as the above does? */
2609 unsigned long temp
[3];
2610 char *str
= get_cell ();
2615 temp
[i
] = addr
% (1000 * 1000 * 1000);
2616 addr
/= (1000 * 1000 * 1000);
2620 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2629 xsnprintf (str
, CELLSIZE
, "%s%0*lu", sign
, width
, temp
[0]);
2632 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu", sign
, width
,
2636 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu%09lu", sign
, width
,
2637 temp
[2], temp
[1], temp
[0]);
2640 internal_error (__FILE__
, __LINE__
,
2641 _("failed internal consistency check"));
2648 octal2str (ULONGEST addr
, int width
)
2650 unsigned long temp
[3];
2651 char *str
= get_cell ();
2656 temp
[i
] = addr
% (0100000 * 0100000);
2657 addr
/= (0100000 * 0100000);
2661 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2671 xsnprintf (str
, CELLSIZE
, "%*o", width
, 0);
2673 xsnprintf (str
, CELLSIZE
, "0%0*lo", width
, temp
[0]);
2676 xsnprintf (str
, CELLSIZE
, "0%0*lo%010lo", width
, temp
[1], temp
[0]);
2679 xsnprintf (str
, CELLSIZE
, "0%0*lo%010lo%010lo", width
,
2680 temp
[2], temp
[1], temp
[0]);
2683 internal_error (__FILE__
, __LINE__
,
2684 _("failed internal consistency check"));
2691 paddr_u (CORE_ADDR addr
)
2693 return decimal2str ("", addr
, 0);
2697 paddr_d (LONGEST addr
)
2700 return decimal2str ("-", -addr
, 0);
2702 return decimal2str ("", addr
, 0);
2705 /* Eliminate warning from compiler on 32-bit systems. */
2706 static int thirty_two
= 32;
2709 phex (ULONGEST l
, int sizeof_l
)
2717 xsnprintf (str
, CELLSIZE
, "%08lx%08lx",
2718 (unsigned long) (l
>> thirty_two
),
2719 (unsigned long) (l
& 0xffffffff));
2723 xsnprintf (str
, CELLSIZE
, "%08lx", (unsigned long) l
);
2727 xsnprintf (str
, CELLSIZE
, "%04x", (unsigned short) (l
& 0xffff));
2730 str
= phex (l
, sizeof (l
));
2738 phex_nz (ULONGEST l
, int sizeof_l
)
2746 unsigned long high
= (unsigned long) (l
>> thirty_two
);
2749 xsnprintf (str
, CELLSIZE
, "%lx",
2750 (unsigned long) (l
& 0xffffffff));
2752 xsnprintf (str
, CELLSIZE
, "%lx%08lx", high
,
2753 (unsigned long) (l
& 0xffffffff));
2758 xsnprintf (str
, CELLSIZE
, "%lx", (unsigned long) l
);
2762 xsnprintf (str
, CELLSIZE
, "%x", (unsigned short) (l
& 0xffff));
2765 str
= phex_nz (l
, sizeof (l
));
2772 /* Converts a LONGEST to a C-format hexadecimal literal and stores it
2773 in a static string. Returns a pointer to this string. */
2775 hex_string (LONGEST num
)
2777 char *result
= get_cell ();
2778 xsnprintf (result
, CELLSIZE
, "0x%s", phex_nz (num
, sizeof (num
)));
2782 /* Converts a LONGEST number to a C-format hexadecimal literal and
2783 stores it in a static string. Returns a pointer to this string
2784 that is valid until the next call. The number is padded on the
2785 left with 0s to at least WIDTH characters. */
2787 hex_string_custom (LONGEST num
, int width
)
2789 char *result
= get_cell ();
2790 char *result_end
= result
+ CELLSIZE
- 1;
2791 const char *hex
= phex_nz (num
, sizeof (num
));
2792 int hex_len
= strlen (hex
);
2794 if (hex_len
> width
)
2796 if (width
+ 2 >= CELLSIZE
)
2797 internal_error (__FILE__
, __LINE__
,
2798 _("hex_string_custom: insufficient space to store result"));
2800 strcpy (result_end
- width
- 2, "0x");
2801 memset (result_end
- width
, '0', width
);
2802 strcpy (result_end
- hex_len
, hex
);
2803 return result_end
- width
- 2;
2806 /* Convert VAL to a numeral in the given radix. For
2807 * radix 10, IS_SIGNED may be true, indicating a signed quantity;
2808 * otherwise VAL is interpreted as unsigned. If WIDTH is supplied,
2809 * it is the minimum width (0-padded if needed). USE_C_FORMAT means
2810 * to use C format in all cases. If it is false, then 'x'
2811 * and 'o' formats do not include a prefix (0x or leading 0). */
2814 int_string (LONGEST val
, int radix
, int is_signed
, int width
,
2823 result
= hex_string (val
);
2825 result
= hex_string_custom (val
, width
);
2832 if (is_signed
&& val
< 0)
2833 return decimal2str ("-", -val
, width
);
2835 return decimal2str ("", val
, width
);
2839 char *result
= octal2str (val
, width
);
2840 if (use_c_format
|| val
== 0)
2846 internal_error (__FILE__
, __LINE__
,
2847 _("failed internal consistency check"));
2851 /* Convert a CORE_ADDR into a string. */
2853 core_addr_to_string (const CORE_ADDR addr
)
2855 char *str
= get_cell ();
2857 strcat (str
, phex (addr
, sizeof (addr
)));
2862 core_addr_to_string_nz (const CORE_ADDR addr
)
2864 char *str
= get_cell ();
2866 strcat (str
, phex_nz (addr
, sizeof (addr
)));
2870 /* Convert a string back into a CORE_ADDR. */
2872 string_to_core_addr (const char *my_string
)
2874 int addr_bit
= gdbarch_addr_bit (current_gdbarch
);
2877 if (my_string
[0] == '0' && tolower (my_string
[1]) == 'x')
2879 /* Assume that it is in hex. */
2881 for (i
= 2; my_string
[i
] != '\0'; i
++)
2883 if (isdigit (my_string
[i
]))
2884 addr
= (my_string
[i
] - '0') + (addr
* 16);
2885 else if (isxdigit (my_string
[i
]))
2886 addr
= (tolower (my_string
[i
]) - 'a' + 0xa) + (addr
* 16);
2888 error (_("invalid hex \"%s\""), my_string
);
2891 /* Not very modular, but if the executable format expects
2892 addresses to be sign-extended, then do so if the address was
2893 specified with only 32 significant bits. Really this should
2894 be determined by the target architecture, not by the object
2896 if (i
- 2 == addr_bit
/ 4
2898 && bfd_get_sign_extend_vma (exec_bfd
))
2899 addr
= (addr
^ ((CORE_ADDR
) 1 << (addr_bit
- 1)))
2900 - ((CORE_ADDR
) 1 << (addr_bit
- 1));
2904 /* Assume that it is in decimal. */
2906 for (i
= 0; my_string
[i
] != '\0'; i
++)
2908 if (isdigit (my_string
[i
]))
2909 addr
= (my_string
[i
] - '0') + (addr
* 10);
2911 error (_("invalid decimal \"%s\""), my_string
);
2919 host_address_to_string (const void *addr
)
2921 char *str
= get_cell ();
2922 sprintf (str
, "0x%lx", (unsigned long) addr
);
2927 gdb_realpath (const char *filename
)
2929 /* Method 1: The system has a compile time upper bound on a filename
2930 path. Use that and realpath() to canonicalize the name. This is
2931 the most common case. Note that, if there isn't a compile time
2932 upper bound, you want to avoid realpath() at all costs. */
2933 #if defined(HAVE_REALPATH)
2935 # if defined (PATH_MAX)
2937 # define USE_REALPATH
2938 # elif defined (MAXPATHLEN)
2939 char buf
[MAXPATHLEN
];
2940 # define USE_REALPATH
2942 # if defined (USE_REALPATH)
2943 const char *rp
= realpath (filename
, buf
);
2946 return xstrdup (rp
);
2949 #endif /* HAVE_REALPATH */
2951 /* Method 2: The host system (i.e., GNU) has the function
2952 canonicalize_file_name() which malloc's a chunk of memory and
2953 returns that, use that. */
2954 #if defined(HAVE_CANONICALIZE_FILE_NAME)
2956 char *rp
= canonicalize_file_name (filename
);
2958 return xstrdup (filename
);
2964 /* FIXME: cagney/2002-11-13:
2966 Method 2a: Use realpath() with a NULL buffer. Some systems, due
2967 to the problems described in in method 3, have modified their
2968 realpath() implementation so that it will allocate a buffer when
2969 NULL is passed in. Before this can be used, though, some sort of
2970 configure time test would need to be added. Otherwize the code
2971 will likely core dump. */
2973 /* Method 3: Now we're getting desperate! The system doesn't have a
2974 compile time buffer size and no alternative function. Query the
2975 OS, using pathconf(), for the buffer limit. Care is needed
2976 though, some systems do not limit PATH_MAX (return -1 for
2977 pathconf()) making it impossible to pass a correctly sized buffer
2978 to realpath() (it could always overflow). On those systems, we
2980 #if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA)
2982 /* Find out the max path size. */
2983 long path_max
= pathconf ("/", _PC_PATH_MAX
);
2986 /* PATH_MAX is bounded. */
2987 char *buf
= alloca (path_max
);
2988 char *rp
= realpath (filename
, buf
);
2989 return xstrdup (rp
? rp
: filename
);
2994 /* This system is a lost cause, just dup the buffer. */
2995 return xstrdup (filename
);
2998 /* Return a copy of FILENAME, with its directory prefix canonicalized
3002 xfullpath (const char *filename
)
3004 const char *base_name
= lbasename (filename
);
3009 /* Extract the basename of filename, and return immediately
3010 a copy of filename if it does not contain any directory prefix. */
3011 if (base_name
== filename
)
3012 return xstrdup (filename
);
3014 dir_name
= alloca ((size_t) (base_name
- filename
+ 2));
3015 /* Allocate enough space to store the dir_name + plus one extra
3016 character sometimes needed under Windows (see below), and
3017 then the closing \000 character */
3018 strncpy (dir_name
, filename
, base_name
- filename
);
3019 dir_name
[base_name
- filename
] = '\000';
3021 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3022 /* We need to be careful when filename is of the form 'd:foo', which
3023 is equivalent of d:./foo, which is totally different from d:/foo. */
3024 if (strlen (dir_name
) == 2 && isalpha (dir_name
[0]) && dir_name
[1] == ':')
3027 dir_name
[3] = '\000';
3031 /* Canonicalize the directory prefix, and build the resulting
3032 filename. If the dirname realpath already contains an ending
3033 directory separator, avoid doubling it. */
3034 real_path
= gdb_realpath (dir_name
);
3035 if (IS_DIR_SEPARATOR (real_path
[strlen (real_path
) - 1]))
3036 result
= concat (real_path
, base_name
, (char *)NULL
);
3038 result
= concat (real_path
, SLASH_STRING
, base_name
, (char *)NULL
);
3045 /* This is the 32-bit CRC function used by the GNU separate debug
3046 facility. An executable may contain a section named
3047 .gnu_debuglink, which holds the name of a separate executable file
3048 containing its debug info, and a checksum of that file's contents,
3049 computed using this function. */
3051 gnu_debuglink_crc32 (unsigned long crc
, unsigned char *buf
, size_t len
)
3053 static const unsigned long crc32_table
[256] = {
3054 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
3055 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
3056 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
3057 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
3058 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
3059 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
3060 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
3061 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
3062 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
3063 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
3064 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
3065 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
3066 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
3067 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
3068 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
3069 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
3070 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
3071 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
3072 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
3073 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
3074 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
3075 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
3076 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
3077 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
3078 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
3079 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
3080 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
3081 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
3082 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
3083 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
3084 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
3085 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
3086 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
3087 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
3088 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
3089 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
3090 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
3091 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
3092 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
3093 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
3094 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
3095 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
3096 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
3097 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
3098 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
3099 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
3100 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
3101 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
3102 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
3103 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
3104 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
3109 crc
= ~crc
& 0xffffffff;
3110 for (end
= buf
+ len
; buf
< end
; ++buf
)
3111 crc
= crc32_table
[(crc
^ *buf
) & 0xff] ^ (crc
>> 8);
3112 return ~crc
& 0xffffffff;;
3116 align_up (ULONGEST v
, int n
)
3118 /* Check that N is really a power of two. */
3119 gdb_assert (n
&& (n
& (n
-1)) == 0);
3120 return (v
+ n
- 1) & -n
;
3124 align_down (ULONGEST v
, int n
)
3126 /* Check that N is really a power of two. */
3127 gdb_assert (n
&& (n
& (n
-1)) == 0);
3131 /* Allocation function for the libiberty hash table which uses an
3132 obstack. The obstack is passed as DATA. */
3135 hashtab_obstack_allocate (void *data
, size_t size
, size_t count
)
3137 unsigned int total
= size
* count
;
3138 void *ptr
= obstack_alloc ((struct obstack
*) data
, total
);
3139 memset (ptr
, 0, total
);
3143 /* Trivial deallocation function for the libiberty splay tree and hash
3144 table - don't deallocate anything. Rely on later deletion of the
3145 obstack. DATA will be the obstack, although it is not needed
3149 dummy_obstack_deallocate (void *object
, void *data
)
3154 /* The bit offset of the highest byte in a ULONGEST, for overflow
3157 #define HIGH_BYTE_POSN ((sizeof (ULONGEST) - 1) * HOST_CHAR_BIT)
3159 /* True (non-zero) iff DIGIT is a valid digit in radix BASE,
3160 where 2 <= BASE <= 36. */
3163 is_digit_in_base (unsigned char digit
, int base
)
3165 if (!isalnum (digit
))
3168 return (isdigit (digit
) && digit
< base
+ '0');
3170 return (isdigit (digit
) || tolower (digit
) < base
- 10 + 'a');
3174 digit_to_int (unsigned char c
)
3179 return tolower (c
) - 'a' + 10;
3182 /* As for strtoul, but for ULONGEST results. */
3185 strtoulst (const char *num
, const char **trailer
, int base
)
3187 unsigned int high_part
;
3192 /* Skip leading whitespace. */
3193 while (isspace (num
[i
]))
3196 /* Handle prefixes. */
3199 else if (num
[i
] == '-')
3205 if (base
== 0 || base
== 16)
3207 if (num
[i
] == '0' && (num
[i
+ 1] == 'x' || num
[i
+ 1] == 'X'))
3215 if (base
== 0 && num
[i
] == '0')
3221 if (base
< 2 || base
> 36)
3227 result
= high_part
= 0;
3228 for (; is_digit_in_base (num
[i
], base
); i
+= 1)
3230 result
= result
* base
+ digit_to_int (num
[i
]);
3231 high_part
= high_part
* base
+ (unsigned int) (result
>> HIGH_BYTE_POSN
);
3232 result
&= ((ULONGEST
) 1 << HIGH_BYTE_POSN
) - 1;
3233 if (high_part
> 0xff)
3236 result
= ~ (ULONGEST
) 0;
3243 if (trailer
!= NULL
)
3246 result
= result
+ ((ULONGEST
) high_part
<< HIGH_BYTE_POSN
);
3253 /* Simple, portable version of dirname that does not modify its
3257 ldirname (const char *filename
)
3259 const char *base
= lbasename (filename
);
3262 while (base
> filename
&& IS_DIR_SEPARATOR (base
[-1]))
3265 if (base
== filename
)
3268 dirname
= xmalloc (base
- filename
+ 2);
3269 memcpy (dirname
, filename
, base
- filename
);
3271 /* On DOS based file systems, convert "d:foo" to "d:.", so that we
3272 create "d:./bar" later instead of the (different) "d:/bar". */
3273 if (base
- filename
== 2 && IS_ABSOLUTE_PATH (base
)
3274 && !IS_DIR_SEPARATOR (filename
[0]))
3275 dirname
[base
++ - filename
] = '.';
3277 dirname
[base
- filename
] = '\0';